Vulnerability details

CVE-2025-9527

Linksys E1700

Linksys E1700 QoSSetup stack-based overflow

CVSS 4.0

8.7High

Official description

A vulnerability was found in Linksys E1700 1.0.0.4.003. This affects the function QoSSetup of the file /goform/QoSSetup. Performing manipulation of the argument ack_policy results in stack-based buffer overflow. The attack may be initiated remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS scores

Score	Version	Source	Vector
8.7High	4.0	CVEProject cvelistV5 (CNA) (VulDB)	`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P`
8.8High	3.1	CVEProject cvelistV5 (CNA) (VulDB)	`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R`
8.8High	3.0	CVEProject cvelistV5 (CNA) (VulDB)	`CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R`
9.0High	2.0	CVEProject cvelistV5 (CNA) (VulDB)	`AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR`

Affected products

Vendor	Product	Versions	Source
Linksys	E1700	1.0.0.4.003	CVEProject cvelistV5 (CNA)

References and advisories

https://www.linksys.com/ product
https://vuldb.com/?id.321544 vdb-entrytechnical-description
https://vuldb.com/?ctiid.321544 signaturepermissions-required
https://vuldb.com/?submit.634826 third-party-advisory
https://github.com/wudipjq/my_vuln/blob/main/Linksys2/vuln_60/60.md related
https://github.com/wudipjq/my_vuln/blob/main/Linksys2/vuln_60/60.md#poc exploit

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Details

Published: 2025-08-27
Last updated: 2025-08-27
State: Published
Assigner (CNA): VulDB

Exploit prediction (EPSS)

1.54%

Probability of exploitation in 30 days

75.1%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: No
Exploitation: Proof of concept
Technical impact: Total

Weaknesses (CWE)

CWE-121
Stack-based Buffer Overflow
CWE-119
Memory Corruption